[CC69Rat]

I usually use either a green scotch brite pad or 220 paper to knock the epoxy down right before the first coat of 2k primer. (High build) There's not really any need to sand the epoxy primer before 2k primer as long as it doesn't pass the 7 day window.

* Bare metal - 80 grit scratches.
*Fix any metal issues (dolly or filler, however you choose) make sure all areas wherr youve pit filler are sanded to at minimum of 80 grit
* Epoxy prime, 2 coats. I use Southern Polyurethanes and I'm very happy with it
* knock the epoxy down with scotch brite or 220 once it dries
* 2k primer - first coat
* guide coat
* block with 320
* fix any metal issues, low or high spots
* 2k primer - second coat
* guide coat
* block again with 500 if you're doing single stage, or solid color base / clear

* for metallics - one more coat of 2k primer and block again with 600. Metallics will lay into the sand scratches at about 400-500. I usually go to 600.

Base and clear to your liking.

I personally like single stage but I like blocking too,.. so.